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authorJens Axboe <axboe@kernel.dk>2019-08-07 12:23:57 -0600
committerJens Axboe <axboe@kernel.dk>2019-08-07 12:23:57 -0600
commit752ead44491e8c91e14d7079625c5916b30921c5 (patch)
tree35e8ce8c5b731a922a53b6d45cc48804f0e5af11 /drivers/block
parent2d7271501720038381d45fb3dcbe4831228fc8cc (diff)
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libata: add SG safety checks in SFF pio transfers
Abort processing of a command if we run out of mapped data in the SG list. This should never happen, but a previous bug caused it to be possible. Play it safe and attempt to abort nicely if we don't have more SG segments left. Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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